Smart PDF Compressor: Reduce
Shrink PDFs offline, no upload
Free · Designed for iPad. Not verified for macOS.
Free, offline PDF compressor for iPhone and iPad. An 8-page scan went from 5.6 MB to 669 KB, 88.1% smaller, and stayed readable. Target size mode & batch. Zero uploads.
Smart PDF Compressor is a free, offline PDF compressor for iPhone and iPad that helps anyone emailing, uploading or storing a PDF dramatically reduce file size (for example, shrinking an 8-page scan from 5.6 MB to 669 KB, 88.1% smaller) — without the file ever leaving the device.
ALL PROCESSING IS LOCAL
Your documents never leave your device. No internet connection required, no cloud uploads, no data collection. Complete privacy guaranteed.
KEY FEATURES
- Target Size Mode: Pick an exact target file size (25 MB, 10 MB, 5 MB, 2 MB, or custom) to fit email and upload limits
- Keep Text & Links Selectable: Preserves original text, hyperlinks, and document structure by default
- Size Estimates First: See the estimated size for each option before you compress
- Three Presets: Best quality, Balanced (recommended) and Smallest file
- Advanced Options: 1-bit black & white mode, optional OCR text recognition, resolution override (72–300 DPI), and metadata removal
- Smart Compression: Automatically detects scanned vs. digital pages and applies suitable settings
- Batch Compression: Compress multiple PDFs at once with progress tracking
- Share as ZIP: Bundle several compressed PDFs into one ZIP archive and name it before you share
- Side-by-Side Preview: Compare original and compressed pages before saving
- File History: Browse, preview, rename, and share all your compressed files
- Appearance & Languages: Light/Dark mode and support for English, German, French, Japanese, and Korean
- Works on iPhone and iPad
HOW IT WORKS
1. Tap Choose PDF and pick a file from Files
2. Choose a preset or set a target size — see estimated results before compressing
3. Tap Compress PDF and see the exact before and after sizes
4. Share or save your compressed PDF, or send several as one ZIP
PERFECT FOR
- Reducing email attachment sizes
- Fitting strict upload limits on portals and government forms
- Saving storage space on your device
- Compressing scanned receipts, contracts, and books
- Preparing files for sharing via messaging apps
Smart PDF Compressor uses advanced on-device image processing and structure-preserving optimization to deliver fast, reliable compression without sacrificing readability.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Target Size Mode: Choose an exact target size (25 MB, 10 MB, 5 MB, 2 MB, or custom) to easily fit email attachment limits.
• Selectable Text & Links: Text, links, and forms stay sharp and selectable by default with structure-preserving compression.
• Black & White (1-bit): Convert documents to pure monochrome for maximum file size reduction on text scans.
• Text Recognition (OCR): Optional on-device OCR makes scanned documents searchable.
• Redesigned Options: Fine-tune resolution, color mode, and metadata stripping per document.
• Multi-language Support: Now available in English, German, French, Japanese, and Korean.
• Performance improvements and bug fixes.
The developer, Quan Dang, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Quan Dang
- Size
- 4.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
English and 4 more
- English, French, German, Japanese, Korean
- Age Rating
4+
- 4+
- Copyright
- © 2026 Quan Dang
